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| author |   David S. Miller <davem@davemloft.net> | 2011-03-01 14:22:19 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-01 14:22:19 -0800 |
| commit | 5df65e5567a497a28067019b8ff08f98fb026629 (patch) | |
| tree | 776a8a2cfa2cf5962ea0d53dea8c6c8360a0c58d | |
| parent | ipv4: Make final arg to ip_route_output_flow to be boolean "can_sleep" (diff) | |
| download | linux-dev-5df65e5567a497a28067019b8ff08f98fb026629.tar.xz linux-dev-5df65e5567a497a28067019b8ff08f98fb026629.zip | |
net: Add FLOWI_FLAG_CAN_SLEEP.
And set is in contexts where the route resolution can sleep.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/flow.h | 1 | ||||
| -rw-r--r-- | include/net/route.h | 2 | ||||
| -rw-r--r-- | net/ipv4/raw.c | 3 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 6 | ||||
| -rw-r--r-- | net/ipv6/ip6_output.c | 2 |
5 files changed, 11 insertions, 3 deletions
diff --git a/include/net/flow.h b/include/net/flow.h index f2080e65276d..fd0413873b8e 100644 --- a/include/net/flow.h +++ b/include/net/flow.h @@ -50,6 +50,7 @@ struct flowi { __u8 flags; #define FLOWI_FLAG_ANYSRC 0x01 #define FLOWI_FLAG_PRECOW_METRICS 0x02 +#define FLOWI_FLAG_CAN_SLEEP 0x04 union { struct { __be16 sport; diff --git a/include/net/route.h b/include/net/route.h index 6de4333d6002..1be5c05a0905 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -185,6 +185,8 @@ static inline int ip_route_connect(struct rtable **rp, __be32 dst, fl.flags |= FLOWI_FLAG_ANYSRC; if (protocol == IPPROTO_TCP) fl.flags |= FLOWI_FLAG_PRECOW_METRICS; + if (can_sleep) + fl.flags |= FLOWI_FLAG_CAN_SLEEP; if (!dst || !src) { err = __ip_route_output_key(net, rp, &fl); diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index e1857658964d..e8e8613bcbcc 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -555,7 +555,8 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, .fl4_tos = tos, .proto = inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol, - }; + .flags = FLOWI_FLAG_CAN_SLEEP, + }; if (!inet->hdrincl) { err = raw_probe_proto_opt(&fl, msg); if (err) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 790187b5c308..c6bcc93debd5 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -914,9 +914,11 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, .fl4_src = saddr, .fl4_tos = tos, .proto = sk->sk_protocol, - .flags = inet_sk_flowi_flags(sk), + .flags = (inet_sk_flowi_flags(sk) | + FLOWI_FLAG_CAN_SLEEP), .fl_ip_sport = inet->inet_sport, - .fl_ip_dport = dport }; + .fl_ip_dport = dport + }; struct net *net = sock_net(sk); security_sk_classify_flow(sk, &fl); diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 28209b2d254d..77b1942f335b 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1026,6 +1026,7 @@ struct dst_entry *ip6_dst_lookup_flow(struct sock *sk, struct flowi *fl, if (final_dst) ipv6_addr_copy(&fl->fl6_dst, final_dst); if (want_blackhole) { + fl->flags |= FLOWI_FLAG_CAN_SLEEP; err = __xfrm_lookup(sock_net(sk), &dst, fl, sk, XFRM_LOOKUP_WAIT); if (err == -EREMOTE) err = ip6_dst_blackhole(sk, &dst, fl); @@ -1070,6 +1071,7 @@ struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi *fl, if (final_dst) ipv6_addr_copy(&fl->fl6_dst, final_dst); if (want_blackhole) { + fl->flags |= FLOWI_FLAG_CAN_SLEEP; err = __xfrm_lookup(sock_net(sk), &dst, fl, sk, XFRM_LOOKUP_WAIT); if (err == -EREMOTE) err = ip6_dst_blackhole(sk, &dst, fl); |